100% PASS ISC - ACCURATE COPYRIGHT - QUESTIONS COPYRIGHT SECURITY PROFESSIONAL (COPYRIGHT) EXAM

100% Pass ISC - Accurate copyright - Questions copyright Security Professional (copyright) Exam

100% Pass ISC - Accurate copyright - Questions copyright Security Professional (copyright) Exam

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Tags: Questions copyright Exam, copyright Certification Dumps, Latest copyright Exam Test, Real copyright Question, copyright Latest Dumps Ebook

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copyright Certification Dumps - Latest copyright Exam Test

We present our ISC copyright real questions in PDF format. It is beneficial for those applicants who are busy in daily routines. The copyright PDF QUESTIONS contains all the exam questions which will appear in the real test. You can easily get ready for the examination in a short time by just memorizing copyright Actual Questions.

ISC copyright Security Professional (copyright) Sample Questions (Q1377-Q1382):

NEW QUESTION # 1377
Secure Sockets Layer (SSL) uses a Message Authentication Code (MAC) for what purpose?

  • A. message interleave checking.
  • B. message non-repudiation.
  • C. message integrity.
  • D. message confidentiality.

Answer: C

Explanation:
A keyed hash also called a MAC (message authentication code) is used for integrity protection and authenticity. In cryptography, a message authentication code (MAC) is a generated value used to authenticate a message. A MAC can be generated by HMAC or CBC-MAC methods. The MAC protects both a message's integrity (by ensuring that a different MAC will be produced if the message has changed) as well as its authenticity, because only someone who knows the secret key could have modified the message. MACs differ from digital signatures as MAC values are both generated and verified using the same secret key. This implies that the sender and receiver of a message must agree on the same key before initiating communications, as is the case with symmetric encryption. For the same reason, MACs do not provide the property of non-repudiation offered by signatures specifically in the case of a network-wide shared secret key: any user who can verify a MAC is also capable of generating MACs for other messages.
HMAC When using HMAC the symmetric key of the sender would be concatenated (added at the end) with the message. The result of this process (message + secret key) would be put through a hashing algorithm, and the result would be a MAC value. This MAC value is then appended to the message being sent. If an enemy were to intercept this message and modify it, he would not have the necessary symmetric key to create a valid MAC value. The receiver would detect the tampering because the MAC value would not be valid on the receiving side.
CBC-MAC If a CBC-MAC is being used, the message is encrypted with a symmetric block cipher in CBC mode, and the output of the final block of ciphertext is used as the MAC. The sender does not send the encrypted version of the message, but instead sends the plaintext version and the MAC attached to the message. The receiver receives the plaintext message and encrypts it with the same symmetric block cipher in CBC mode and calculates an independent MAC value. The receiver compares the new MAC value with the MAC value sent with the message. This method does not use a hashing algorithm as does HMAC.
Cipher-Based Message Authentication Code (CMAC) Some security issues with CBC-MAC were found and they created Cipher-Based Message Authentication Code (CMAC) as a replacement. CMAC provides the same type of data origin authentication and integrity as CBC-MAC, but is more secure mathematically. CMAC is a variation of CBC-MAC. It is approved to work with AES and Triple DES. HMAC, CBC-MAC, and CMAC work higher in the network stack and can identify not only transmission errors (accidental), but also more nefarious modifications, as in an attacker messing with a message for her own benefit. This means all of these technologies can identify intentional, unauthorized modifications and accidental changes- three in one.
The following are all incorrect answers: "Message non-repudiation" is incorrect. Nonrepudiation is the assurance that someone cannot deny something. Typically, nonrepudiation refers to the ability to ensure that a party to a contract or a communication cannot deny the authenticity of their signature on a document or the sending of a message that they originated. To repudiate means to deny. For many years, authorities have sought to make repudiation impossible in some situations. You might send registered mail, for example, so the recipient cannot deny that a letter was delivered. Similarly, a legal document typically requires witnesses to signing so that the person who signs cannot deny having done so. On the Internet, a digital signature is used not only to ensure that a message or document has been electronically signed by the person that purported to sign the document, but also, since a digital signature can only be created by one person, to ensure that a person cannot later deny that they furnished the signature.
"Message confidentiality" is incorrect. The Message confidentiality is protected by encryption not by hashing algorithms.
"Message interleave checking" is incorrect. This is a nonsense term included as a distractor.
Reference(s) used for this question: Harris, Shon (2012-10-25). copyright All-in-One Exam Guide, 6th Edition (p. 1384). McGraw-Hill. Kindle Edition. and http://csrc.nist.gov/publications/nistpubs/800-38B/SP_800-38B.pdf and http://searchsecurity.techtarget.com/definition/nonrepudiation and https://en.wikipedia.org/wiki/Message_authentication_code


NEW QUESTION # 1378
A vulnerability test on an Information System (IS) is conducted to

  • A. exploit security weaknesses in the IS.
  • B. prepare for Disaster Recovery (DR) planning.
  • C. evaluate the effectiveness of security controls.
  • D. measure system performance on systems with weak security controls.

Answer: C


NEW QUESTION # 1379
Which of the following is the BEST approach to implement multiple servers on a virtual system?

  • A. Implement one primary function per virtual server and apply individual security configuration for each virtual server.
  • B. Implement multiple functions per virtual server and apply the same security configuration for each virtual server.
  • C. Implement one primary function per virtual server and apply high security configuration on the host operating system.
  • D. Implement multiple functions within the same virtual server and apply individual security configurations to each function.

Answer: A


NEW QUESTION # 1380
An organization provides its employees with laptops they can use to work remotely, and uses Software as a Service (SaaS) for corporate email and enterprise file sharing. Which of the following protection mechanisms is MOST effective as a Data Loss Prevention (DLP) control?

  • A. Endpoint management with remote wipe and remote update capabilities
  • B. Disk encryption enforced for company-issued devices
  • C. Virtual Private Network (VPN) client with split tunneling enabled
  • D. Cloud Access Security Broker (CASB) configured and enabled

Answer: A


NEW QUESTION # 1381
If compromised, which of the following would lead to the exploitation of multiple virtual machines?

  • A. Virtual machine monitor
  • B. Virtual machine file system
  • C. Virtual device drivers
  • D. Virtual machine instance

Answer: A


NEW QUESTION # 1382
......

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